The survey also considered how clearly reports were set out in terms of text, tables and graphics - and how easy they were for parents to understand. It found only 42 per cent were easy. However, only 35 per cent were easy to understand and contained the required information.
However, schools were better at telling parents their child's next learning steps and nearly two-thirds included actions families could take to support learning at home. Just over half of all schools designed a new report format last year, while nearly two-thirds of teachers said it took them longer to write the reports than in previous years.
The ministry's report also found most principals felt they were minimally supported or unsupported by the ministry and that they continued to be "very concerned" about the unintended consequences of National Standards, such as league tables and the demotivation of students who are consistently below the standards.
The other key area of the report looked at Overall Teacher Judgments - the way teachers work out where each child is at in reading, writing and maths in relation to the National Standards.
It found teachers used a variety of assessments and were "very confident" in both the accuracy of the OTJs they had made and the consistencies within their schools. Approximately a third of the schools were involved in moderation with other schools.
Education Minister Anne Tolley, who has faced a lot of opposition from the sector on the standards, said the report was "really encouraging" considering the evidence was gathered during the first year of implementation.
"Despite the fact that schools had just started working with the standards, the study found that most boards had the confidence to implement the National Standards, and felt they had a good understanding of them.
"It was also heartening to see that teachers were very confident in both the accuracy and consistency of their judgments- something which was shared by principals."
She said the reporting was "very promising, and I know that great gains have already been made this year".
However, educational sector union NZEI said the report provided yet more evidence that National Standards would not work.
President Ian Leckie said: "The Government must engage with the sector on finding meaningful ways to raise student achievement."
REPORTING
USE OF NATIONAL STANDARDS IN SCHOOL REPORTS
* None - 21% of schools don't mention the standards at all.
* Insufficient - 31% of schools refer to the standards but don't sufficiently describe achievement measured against them.
* Sufficient - 48% of schools sufficiently describe achievement in relation to the standards.
A GOOD REPORT THAT'S EASY TO UNDERSTAND?
* 35% contained the required information and were easy to understand.
* 26% had the information but weren't difficult to understand.